EP 0943611 A1 19990922 - Improved propylene oxide and styrene monomer co-production procedure
Title (en)
Improved propylene oxide and styrene monomer co-production procedure
Title (de)
Verbessertes Verfahren zur Herstellung von Propylenoxid und Styren
Title (fr)
Procédé amélioré pour la préparation du propylènoxide et du styrène
Publication
Application
Priority
- EP 98500071 A 19980317
- JP 6680598 A 19980317
- US 4001698 A 19980317
Abstract (en)
The propylene oxide and styrene co-production process generates a heavy residue byproduct containing metals, mainly sodium, which previously was adequate for use only as low quality fuel. According to the invention, the heavy residue is dehydrated in the presence of a strong inorganic acid at temperatures of 150-250 DEG C and pressures below the atmospheric pressure to yield styrene and recover 2-phenylethanol, a compound used in the perfume industry, and a heavy residue substantially free of metals that may be used as fuel.
IPC 1-7
IPC 8 full level
B01J 27/04 (2006.01); C07B 61/00 (2006.01); C07C 1/24 (2006.01); C07C 15/46 (2006.01); C07C 29/132 (2006.01); C07C 33/22 (2006.01); C07D 301/14 (2006.01); C07D 301/19 (2006.01); C07D 301/32 (2006.01); C07D 303/04 (2006.01)
CPC (source: EP US)
C07C 1/24 (2013.01 - EP US); C07C 15/46 (2013.01 - EP US); C07C 29/132 (2013.01 - EP US); C07D 301/19 (2013.01 - EP US); C07D 301/32 (2013.01 - EP US); C12C 11/02 (2013.01 - EP US); C07C 2527/054 (2013.01 - EP US); Y02P 20/52 (2015.11 - EP US)
Citation (search report)
- [DA] US 5276235 A 19940104 - DUBNER WALTER S [US]
- [DA] US 5210354 A 19930511 - DUBNER WALTER S [US], et al
- [A] US 4400558 A 19830823 - NEMET-MAVRODIN MARGARET I [US], et al
- [A] DATABASE WPI Week 9631, Derwent World Patents Index; AN 96306491, XP002072957
Designated contracting state (EPC)
BE DE ES FR GB IT NL PT
DOCDB simple family (publication)
EP 0943611 A1 19990922; EP 0943611 B1 20020619; DE 69806118 D1 20020725; DE 69806118 T2 20030327; ES 2178816 T3 20030101; JP 3340068 B2 20021028; JP H11292802 A 19991026; PT 943611 E 20021129; US 6080894 A 20000627
DOCDB simple family (application)
EP 98500071 A 19980317; DE 69806118 T 19980317; ES 98500071 T 19980317; JP 6680598 A 19980317; PT 98500071 T 19980317; US 4001698 A 19980317